TY - JOUR
T1 - A two-tiered approach to MRI for hearing loss
T2 - Incremental cost of a comprehensive MRI over high-resolution T2-weighted imaging
AU - Sharma, Aseem
AU - Viets, Ryan
AU - Parsons, Matthew S.
AU - Reis, Martin
AU - Chrisinger, John
AU - Wippold, Franz J.
PY - 2014/1
Y1 - 2014/1
N2 - OBJECTIVE. The objective of our study was to compare the cost-effectiveness of two approaches to using MRI for the evaluation of patients with hearing loss. MATERIALS AND METHODS. We developed a decision tree to compare the cost-effectiveness of conventional MRI with that of a proposed two-tiered model in which an initial 3D T2-weighted imaging examination was used to determine the need for comprehensive MR scanning. Three radiologists independently and blindly reviewed the 3D T2-weighted images acquired as part of the comprehensive MR examinations of 256 patients with hearing loss to assess the diagnostic efficacy of the two-tiered approach. Costs were defined in terms of both the scanner utilization time for the imaging facility and the dollar amount for payers. Effectiveness was defined in terms of the ability to correctly detect the presence or absence of disease. RESULTS. The conventional approach was less cost-effective, with a baseline incremental cost-effectiveness ratio (ICER) of 27,299 minutes of scanner utilization per unit increase in effectiveness. Assuming a 50% reduction in the reimbursement of the technical component from the current level by the Centers for Medicare & Medicaid Services, this result reflected an ICER of $258,664 per unit increase in effectiveness. The results of a sensitivity analysis showed the robustness of the cost-effectiveness of the two-tiered imaging approach in a variety of scenarios that reflect differences in scanning practices and possible differences in recall rates. The conventional imaging approach was absolutely dominated by the two-tiered approach in the scenarios created to reflect the expected range of prevalence of disease. CONCLUSION. A two-tiered approach to MRI provides a more cost-effective alternative to the current approach of using a comprehensive MRI examination without and with contrast material to evaluate patients with hearing loss.
AB - OBJECTIVE. The objective of our study was to compare the cost-effectiveness of two approaches to using MRI for the evaluation of patients with hearing loss. MATERIALS AND METHODS. We developed a decision tree to compare the cost-effectiveness of conventional MRI with that of a proposed two-tiered model in which an initial 3D T2-weighted imaging examination was used to determine the need for comprehensive MR scanning. Three radiologists independently and blindly reviewed the 3D T2-weighted images acquired as part of the comprehensive MR examinations of 256 patients with hearing loss to assess the diagnostic efficacy of the two-tiered approach. Costs were defined in terms of both the scanner utilization time for the imaging facility and the dollar amount for payers. Effectiveness was defined in terms of the ability to correctly detect the presence or absence of disease. RESULTS. The conventional approach was less cost-effective, with a baseline incremental cost-effectiveness ratio (ICER) of 27,299 minutes of scanner utilization per unit increase in effectiveness. Assuming a 50% reduction in the reimbursement of the technical component from the current level by the Centers for Medicare & Medicaid Services, this result reflected an ICER of $258,664 per unit increase in effectiveness. The results of a sensitivity analysis showed the robustness of the cost-effectiveness of the two-tiered imaging approach in a variety of scenarios that reflect differences in scanning practices and possible differences in recall rates. The conventional imaging approach was absolutely dominated by the two-tiered approach in the scenarios created to reflect the expected range of prevalence of disease. CONCLUSION. A two-tiered approach to MRI provides a more cost-effective alternative to the current approach of using a comprehensive MRI examination without and with contrast material to evaluate patients with hearing loss.
KW - Cost-effectiveness
KW - MRI
KW - Sensorineural hearing loss
KW - Vestibular schwannoma
UR - http://www.scopus.com/inward/record.url?scp=84891908634&partnerID=8YFLogxK
U2 - 10.2214/AJR.13.10610
DO - 10.2214/AJR.13.10610
M3 - Article
C2 - 24370138
AN - SCOPUS:84891908634
SN - 0361-803X
VL - 202
SP - 136
EP - 144
JO - American Journal of Roentgenology
JF - American Journal of Roentgenology
IS - 1
ER -