AJR. American journal of roentgenology
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AJR Am J Roentgenol · Apr 2010
ReviewOptimizing detectability of renal pathology with MDCT: protocols, pearls, and pitfalls.
The purpose of this article is to review MDCT acquisition protocol parameters and interpretative practices for evaluating genitourinary lesions other than classic renal cell carcinoma, to optimize lesion detectability and accurately characterize pathologic abnormalities. ⋯ With the goal of refining interpretative performance, this pictorial essay shows the patterns of conspicuity unique to each genitourinary pathologic abnormality, presents experience-based recommendations to improve detection and characterization using multiphasic MDCT, and describes pitfalls to be avoided.
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This study aimed to evaluate the reproducibility of a new grading system for lumbar foraminal stenosis. ⋯ The new grading system for foraminal stenosis of the lumbar spine showed nearly perfect interobserver and intraobserver agreement and would be helpful for clinical study and routine practice.
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AJR Am J Roentgenol · Apr 2010
High-resolution double arterial phase hepatic MRI using adaptive 2D centric view ordering: initial clinical experience.
The objective of our study was to evaluate a new 3D fast spoiled gradient-recalled echo (FSPGR) sequence referred to as modified liver acceleration volume acquisition (LAVA) for high-resolution gadolinium-enhanced dual arterial phase liver MRI and to determine the effect of this technique on the timing of the contrast bolus and lesion detection. ⋯ High-resolution dual arterial phase 3D FSPGR MRI improves the timing of the arterial phase of liver enhancement and provides additional information for liver lesion detection.
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AJR Am J Roentgenol · Apr 2010
Diffusion-weighted MRI of peripheral zone prostate cancer: comparison of tumor apparent diffusion coefficient with Gleason score and percentage of tumor on core biopsy.
The objective of our study was to determine the relationship between the apparent diffusion coefficient (ADC) value on diffusion-weighted imaging (DWI) and Gleason score of prostate cancer and percentage of tumor involvement on prostate core biopsy. ⋯ DWI may help differentiate between low-risk (Gleason score, 6) and intermediate-risk (Gleason score, 7) prostate cancer and between low-risk (Gleason score, 6) and high-risk (Gleason score > 7) prostate cancer. There is an inverse relationship between the ADC and the percentage of tumor involvement on prostate core biopsies.