The key consideration in repeat studies of patients with urolithiasis is by optimizing dose in each study and reducing the overall number of imaging studies to the lowest number possible. CTU Without and With IV Contrast With urinary tract opacification, CTU confirms the ureteral location of a calculus, distinguishing from stone mimics such as an adjacent phlebolith or vascular calcification. CTU can better confirm the degree of obstruction caused by a ureteral stone and potentially also aid in diagnosing a radiolucent stone that may not be visualized with Acute Onset Flank Pain-Suspicion of Stone Disease noncontrast CT. However, there is no relevant literature documenting the benefit of additional CTU in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRI Abdomen and Pelvis Without and With IV Contrast There is no relevant literature documenting the additional benefit of MRI without and with IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRI Abdomen and Pelvis Without IV Contrast There is no relevant literature documenting the additional benefit of MRI without IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRU Without and With IV Contrast There is no relevant literature documenting the additional benefit of MRU without and with IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. However, MRU has been shown in the setting of initial stone detection to be more sensitive than noncontrast CT in the detection of secondary signs of obstruction in the presence of urolithiasis, although this has not been specifically assessed in this clinical scenario [28].
Acute Onset Flank Pain Suspicion of Stone Disease Urolithiasis . The key consideration in repeat studies of patients with urolithiasis is by optimizing dose in each study and reducing the overall number of imaging studies to the lowest number possible. CTU Without and With IV Contrast With urinary tract opacification, CTU confirms the ureteral location of a calculus, distinguishing from stone mimics such as an adjacent phlebolith or vascular calcification. CTU can better confirm the degree of obstruction caused by a ureteral stone and potentially also aid in diagnosing a radiolucent stone that may not be visualized with Acute Onset Flank Pain-Suspicion of Stone Disease noncontrast CT. However, there is no relevant literature documenting the benefit of additional CTU in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRI Abdomen and Pelvis Without and With IV Contrast There is no relevant literature documenting the additional benefit of MRI without and with IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRI Abdomen and Pelvis Without IV Contrast There is no relevant literature documenting the additional benefit of MRI without IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. MRU Without and With IV Contrast There is no relevant literature documenting the additional benefit of MRU without and with IV contrast in a patient with known current stone disease, diagnosed on recent imaging with recurrent symptoms of stone disease. However, MRU has been shown in the setting of initial stone detection to be more sensitive than noncontrast CT in the detection of secondary signs of obstruction in the presence of urolithiasis, although this has not been specifically assessed in this clinical scenario [28].