Changes in Patterns of 99mTc-Macroaggregated Albumin Use Between 2000 and 2015

Article Figures & Data

TABLE 1

^99mTc-MAA Uses in 2000 and 2015

	Number
Use	2000	2015
V/Q scan, routine number of particles	443 (90.0%)	164 (46.7%)
V/Q scan, reduced number of particles	46 (9.3%)	99 (28.2%)
Peritoneal–venous shunt patency	2 (0.4%)	1 (0.3%)
Right-to-left cardiac shunt	1 (0.2%)
Pulmonary artery stenosis		16 (4.6%)
Presurgical evaluation		33 (9.4%)
Lung transplants		33 (9.4%)
Hepatic artery microsphere eligibility		5 (4.6%)
Total	492 (100%)	351 (100%)

TABLE 2

Contraindications to CT Angiography in Patients Undergoing V/Q Scans in 2015

Contraindication	Number
None	7 (2.7%)
Acute kidney injury or chronic kidney disease	121 (46.0%)
Contrast allergy	18 (6.8%)
Pregnancy	6 (2.3%)
Metformin therapy not stopped	2 (0.8%)
Intravascular hypovolemia	1 (0.4%)
Pulmonary hypertension	99 (37.6%)
Heart transplant	2 (0.8%)
Nondiagnostic CT angiography	7 (2.7%)
Total	263 (100%)