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December 15, 2006
An investigation of the impact/potential impact of a four-tier profession on
the practice of radiography
Radiography
Amanda J. Woodford, et al. - Increased demands for radiology services and a
shortage of radiologists and radiography staff have been factors driving
skills mix and radiographer role development. The blurring of professional
boundaries, greater workforce flexibility and a team approach contribute to
the provision of high quality patient service ...
Imaging of musculoskeletal infections
Best Practice & Research: Clinical Rheumatology
Christopher J. Palestro MD, et al. - Imaging procedures are routinely used
to evaluate patients suspected of having musculoskeletal infection.
Radiographs should be performed whenever musculoskeletal infection is
suspected. Even when not diagnostic, radiographs are useful. They provide an
anatomic overview of the region of interest, including pre-existing
conditions that could influence the selection and interpretation of
subsequent procedures...
December 14, 2006
Computed Tomography of Musculoskeletal Pathology
Orthopedic Special Edition
Laura M. Fayad, MD, et al. - This article discusses the evolving role of
16-slice multidetector computed tomography, isotropic data, and 3D volume
visualization. The role of computed tomography (CT) imaging in the
evaluation of the musculoskeletal system continues to evolve...
Free Full Text
Long-Term Clinical and Radiographic Follow-Up of Total Resection for Discoid
Lateral Meniscus
Arthroscopy
Takashi Habata M.D, et al. - Conclusions: The clinical results were
satisfactory and the postoperative arthritic changes were mild in patients
aged under 40 years. However, it is necessary to carefully monitor arthritic
progression in patients who are aged over 19 years and have valgus
deformities, because most of the knees in patients above this age became
more valgus postoperatively...
What is MRI bone oedema in rheumatoid arthritis and why does it matter?
Arthritis Research & Therapy
Fiona M McQueen, et al. - MRI bone oedema occurs in various forms of
inflammatory and non-inflammatory arthritis and probably represents a
cellular infiltrate within bone. It is common in early rheumatoid arthritis
and is associated with erosive progression and poor functional outcome.
Histopathological studies suggest that a cellular infiltrate comprising
lymphocytes and osteoclasts may be detected in subchondral bone and could
mediate the development of erosions from the marrow towards the joint
surface...
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December 13, 2006
Hajdu-Cheney syndrome: Report of a family and a short literature review
Australasian Radiology
Marik, et al. - We report three members of an Armenian family with Hajdu-Cheney
syndrome. The history suggested that five other members of the family were
also probably affected. This disorder is important for the radiologist
because distinctive radiographic findings make the diagnosis possible before
clinical signs and symptoms are fully developed. Additionally, radiographic
examination is essential in all patients suspected of Hajdu-Cheney syndrome
for confirmation of the clinical diagnosis...
Patterns of Red Marrow in the Adult Femur
Clinical Nuclear Medicine
Kim, Suk Chul MD, et al. - Conclusions: A considerably higher number of
adults showed pattern B than pattern C. This suggests that regeneration of
diaphyseal marrow precedes that of the distal marrow in an individual long
bone or possibly that conversion of the latter precedes the former, which is
different from that proposed in the literature...
Establishing a Popliteal Portal Using the METRx System Under Ultrasound
Guidance
Arthroscopy
Ta-Feng Ho M.D., et al. - This report describes a special technique for safe
establishment of a popliteal portal with the METRx system (Medtronic Sofamor
Danek, Memphis, TN) under ultrasound guidance with the patient in the awake
state. Herbert screws located at the posterior tibial plateau were removed
via this portal in a minimally invasive way...
December 12, 2006
Long-standing Morel-Lavallée lesion in the proximal thigh: Ultrasound and MR
findings with surgical and histopathological correlation
Australasian Radiology
Puig, et al. - A 65-year-old man presented with a soft mass in his proximal
right thigh. Ultrasonography showed a well-defined anechoic lesion with
slightly internal echoes. On MRI, the mass was hypointense and minimally
hyperintense compared with muscle at T1 and hyperintense at T2, with a
hypointense peripheral rim on both sequences. No signal loss was observed on
T1-weighted fat-suppression MRI. The clinical setting, imaging findings and
histopathological features were consistent with a long-standing Morel-Lavallée
lesion...
Determination of in-vivo articular cartilage contact areas of human
talocrural joint under weightbearing conditions
Osteoarthritis and Cartilage
L. Wan B.S, et al. - Conclusion: The combined dual fluoroscopic and MR
imaging technique was shown to be capable of determining in-vivo talocrural
cartilage contact areas. During the simulated stance phase of walking, the
contact areas were less than 44% and 31% of the cartilage coverage areas of
the distal tibia and the proximal talus, respectively. These data may be
useful for understanding in-vivo biomechanical function of the cartilage as
well as the etiology of osteoarthritis...
December 11, 2006
Dental panoramic tomography: An approach for the general radiologist
Australasian Radiology
Boeddinghaus; Whyte - Dental panoramic tomography is commonly presented to
radiologists with no dental training for interpretation. An overview of the
technique, basic anatomy and nomenclature and common pathology is presented
with examples to show the anatomy and nomenclature, the artefacts and common
pathology...
Diagnosis of the "large medial meniscus" of the knee on MR imaging
Magnetic Resonance Imaging
Nobuhiko Samoto, et al. - Although several quantitative magnetic resonance (MR)
diagnostic criteria for discoid lateral meniscus (DLM) have been described,
there are no criteria by which to estimate the size of the medial meniscus.
We define a medial meniscus that exceeds the normal size as a ?large medial
meniscus? (LMM), and the purpose of this study is to establish the
quantitative MR diagnostic criteria for LMM...
Cluster Analysis as a Method for Determining Size Ranges for Spinal
Implants: Disc Lumbar Replacement Prosthesis Dimensions from Magnetic
Resonance Images
Spine
Lei, Dang MB, et al. - To develop an objective method for finding the number
of sizes for a lumbar disc replacement...Conclusions: Cluster analysis has
been successfully used to find the dimensions of the minimum number of
prosthesis sizes required to replace L3-L4 to L5-S1 discs; the range of
sizes would enable them to be used at higher lumbar levels in some patients
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December 8, 2006
Tendinopathy and Doppler activity: the vascular response of the achilles
tendon to exercise
Scandinavian Journal of Medicine and Science in Sports
Boesen, M. I., et al. - The mere presence of Doppler in the Achilles tendon
does not per se indicate disease. Eccentric exercise does not extinguish the
flow during or after one training session in patients with chronic AT...
Effects of neurosurgical titanium mesh on radiation dose
Medical Dosimetry
Hassisen Patone M.D, et al. - The purpose of this study was to determine the
dosimetric impact of a neurosurgical titanium mesh in patients treated with
6- and 18-MV photon beams. The effects of a 0.4-mm-thick titanium mesh on
the dose profile at 3 regions within a solid water phantom were measured
using extended dose range-2 (EDR2) film for 6- and 18-MV photon beams...
December 7, 2006
Three-dimensional recording of the human face with a 3D laser scanner
Journal of Plastic, Reconstructive & Aesthetic Surgery
L. Kovacs, et al. - Three-dimensional recording of the surface of the human
body or of certain anatomical areas has gained an ever increasing importance
in recent years. When recording living surfaces, such as the human face, not
only has a varying degree of surface complexity to be accounted for, but
also a variety of other factors, such as motion artefacts...
Functional Pelvic Orientation Measured from Lateral Standing and Sitting
Radiographs
Clinical Orthopedics and Related Research
DiGioia, Anthony M III MD, et al. - We prospectively obtained preoperative
and 3-month postoperative lateral pelvic radiographs in the standing and
sitting positions from 84 patients who underwent total hip arthroplasty. We
measured pelvic orientation (flexion extension) using the anterior pelvic
plane as defined by the anterior superior iliac spines and pubic tubercles
as references...
December 6, 2006
186Re-HEDP in the Treatment of Patients with Inoperable Osteosarcoma
The Journal of Nuclear Medicine
Rizwan Syed, et al. - Conclusion: This study indicates that a simple
approach to tumor dosimetry based on mean tumor dose is inappropriate
because it may underestimate the dose delivered to these heterogeneous
tumors. The data also indicate that EBRT combined with a standard dose of
18.5 MBq/kg of 186Re-HEDP does not provide a sufficient dose to achieve
tumor sterilization...
The Value of Anteroposterior Pelvic Radiographs for Evaluating Pelvic
Osteolysis
Clinical Orthopedics and Related Research
Kitamura, Nobuto MD, et al. - We investigated the role of conventional
radiographs and computed tomography scans for the routine followup of total
hip arthroplasty patients. Among 92 total hip arthroplasties with a mean
followup of 8.5 years, 94 acetabular lesions were detected among 63 hips
using computed tomography and 42 of these hips had osteolysis diagnosed on
radiograph...
Three-dimensional easy morphological (3-DEMO) classification of scoliosis:
Part I
BMC Musculoskeletal Disorders
Stefano Negrini, et al. - Conclusion: The 3-DEMO classification offers a new
and simple way of viewing the spine through an auxiliary plane using a
spinal reference system. Further studies are currently under way to compare
this new system with the existing 3-D classifications, to obtain it using
everyday clinical and x-rays data, and to develop a triage for clinical
use...
December 5, 2006
Bone oedema predicts erosive progression on wrist MRI in early RA - a 2-yr
observational MRI and NC scintigraphy study
Rheumatology
Kari Palosaari, et al. - Conclusion: The degree of local synovial
inflammation at baseline, evaluated by dynamic and static MRI and
quantitative NC scintigraphy, is closely related to the progression of wrist
joint erosions during the first 2 yrs of the disease. Furthermore, at
follow-up, if no persistent clinical response is achieved, these imaging
methods may help to predict future erosiveness and help in clinical
therapeutic decision making...
Usefulness of Hybrid SPECT/CT in 99mTc-HMPAO?Labeled Leukocyte Scintigraphy
for Bone and Joint Infections
The Journal of Nuclear Medicine
Luca Filippi, et al. - White blood cell scanning with
99mTc-hexamethylpropylene amine oxime (HMPAO) has proven highly sensitive
and specific in the diagnosis and follow-up of patients with suspected
osteomyelitis...Conclusion: Our results indicate that SPECT/CT performed
using a hybrid device can improve imaging with 99mTc-HMPAO?labeled
leukocytes in patients with suspected osteomyelitis by providing accurate
anatomic localization and precise definition of the extent of infection...
Development of a Novel 99mTc-Chelate?Conjugated Bisphosphonate with High
Affinity for Bone as a Bone Scintigraphic Agent
The Journal of Nuclear Medicine
Kazuma Ogawa, et al. - Conclusion: We developed a novel
99mTc-chelate?conjugated bisphosphonate with high affinity for bone and
rapid clearance from blood, based on the concept of bifunctional
radiopharmaceuticals. The present findings indicate that 99mTc-HYNIC-HBP
holds great potential for bone scintigraphy...
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December 4, 2006
Diagnosis of Scaphoid Fracture Displacement with Radiography and Computed
Tomography
Journal of Bone and Joint Surgery
Santiago Lozano-Calderón, MD, et al. - Conclusions: Computed tomography
improves the reliability of detecting scaphoid fracture displacement but has
a more limited effect on accuracy, which remains <80%. The utility of
computed tomography scans for diagnosing scaphoid fracture displacement is
affected by the low prevalence of fracture displacement...
December 1, 2006
Magnetic Resonance Imaging Abnormalities in Symptomatic and Contralateral
Knees
American Journal of Sports Medicine
Simone S. Boks, MD, et al. - After trauma, internal knee lesions are found
in approximately two thirds of patients...Conclusion: Ligament knee lesions
are most probably the result of recent trauma. Radial, longitudinal, and
complex meniscal tears are strongly related to trauma, whereas horizontal
meniscal tears and effusion may be preexistent in many cases...
Iterative Decomposition of Water and Fat with Echo Asymmetry and
Least-Squares Estimation (IDEAL) Fast Spin-Echo Imaging of the Ankle:
Initial Clinical Experience
American Journal of Roentgenology
Samuel Fuller, et al. - Reliable, uniform fat suppression is important.
Multiple approaches currently exist, many of which suffer from either
suboptimal signal-to-noise ratio (SNR), or the inability to obtain
consistent fat suppression around the ankle joint..Conclusion: IDEAL fast
spin-echo imaging is a promising technique for MRI of the ankle...
MRI-Negative, Bone Scintigram-Positive in Early Osteonecrosis of the Knees
Clinical Nuclear Medicine
Warwick, Bruce J. M. MB BS, FRACS, FAOrthoA, et al. - Nontraumatic avascular
necrosis (AVN) of bone is a well-reported complication of glucocorticoid
therapy for immunologic and malignant disease. We present the case of a
13-year-old girl with no history of trauma who presented with a 5-day
history of increasing pain in both knees after cord blood transplantation
for acute lymphoblastic leukemia. Plain film and magnetic resonance imaging
(MRI) were reported as normal. Bone scintigraphy revealed evidence of
bilateral avascular necrosis in the distal femora...
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