Ek. Paulson et al., DETECTION OF FOCAL HEPATIC MASSES - STIR MR VS CT DURING ARTERIAL PORTOGRAPHY, Journal of computer assisted tomography, 18(4), 1994, pp. 581-587
Objective: Our goal was to compare short tau inversion recovery MRI (S
TIR) to CT during arterial portography (CTAP) in the detection of hepa
tic lesions. Materials and Methods: Over a 24 month period, 40 patient
s evaluated for possible hepatic resection underwent T1, T2, and STIR
MRI and CTAP. These studies were randomly ordered and interpreted by t
wo independent readers. The total number of lesions and number of lesi
ons within each hepatic segment were analyzed using McNemar's test. Re
sults: Readers 1 and 2 detected 95 and 91 lesions by CTAP and 78 and 8
3 by STIR, respectively, which was not significantly different(p = 0.1
, reader 1; p = 0.4, reader 2). For both readers CTAP and STIR MRI det
ected more lesions than either T2 or T1 MRI (p < 0.01). In the medial
segment, readers 1 and 2 detected 18 and 17 lesions by CTAP and 7 and
9 by STIR, respectively (p = 0.01, reader 1; p = 0.035, reader 2). Con
clusion: Short 7 inversion recovery MRI and CTAP are similar in total
lesion detection except in the medial segment where lesions were more
frequently identified by CTAP than STIR MRI.