Download PDF by Wilfred C. G. Peh: Pitfalls in Diagnostic Radiology

By Wilfred C. G. Peh

The perform of diagnostic radiology has turn into more and more complicated, with using a number of imaging modalities and department into many subspecialty parts. it's changing into ever tougher for subspecialist radiologists, normal radiologists, and citizens to maintain with the advances which are happening yr on yr, and this is often quite real for much less common issues. Failure to understand imaging pitfalls usually ends up in diagnostic mistakes and misinterpretation, and power medicolegal difficulties. This textbook, written by way of specialists from respected facilities internationally, systematically and comprehensively highlights the pitfalls which could take place in diagnostic radiology. either pitfalls particular to diverse modalities and strategies and people particular to specific organ platforms are defined with assistance from a number of high quality illustrations. popularity of those pitfalls is important in assisting the practising radiologist to accomplish a extra exact diagnosis.

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Example text

First of all, keyhole imaging is particularly sensitive to motion, since data acquired at different time points during the dynamic scan are combined in k-space. 18). The larger the number 3 Magnetic Resonance Imaging a 55 b c Fig. 18 Dynamic gradient-echo acquisition based on k-space sharing (TWIST). 5 s for sampling the whole matrix. Series of contrast-enhanced MR angiography images of the carotids from (a) the arterial phase to (b) the arteriovenous overlap and to (c) the venous phase within one breath-hold H.

4 Quantum Mottle . . . . . . . . . . . 5 Aliasing . . . . . . . . . . . . . . 3 Misinterpretation Pitfalls . . . . . . . 1 Suboptimal Contrast Bolus Timing . . . . 2 Improper Kernel Selection and Slice Thickness . . . . . . . . . . 3 Improper Window and Level Selection . . 4 Partial Volume Averaging. . . . . . . . 3 Advances . . . . . . . . . . . . . . Portable CT . . . . . . . . . . . . . Iterative Reconstruction .

Motion Artifact. . . . . . . . . . . . Ring Artifact. . . . . . . . . . . . . Beam-Hardening and Metal Streak Artifacts. . . . . . . . . . . . 4 Quantum Mottle . . . . . . . . . . . 5 Aliasing . . . . . . . . . . . . . . 3 Misinterpretation Pitfalls . . . . . . . 1 Suboptimal Contrast Bolus Timing . . . . 2 Improper Kernel Selection and Slice Thickness . . . . . . . . . . 3 Improper Window and Level Selection .

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