toe-brachial pressure index same as to-brachial index or TBI

Correlación entre los índices dedo-brazo y tobillo-brazo en pacientes con diabetes mellitus tipo 2
Correlation between toe-brachial index and ankle-brachial index in patients with diabetes mellitus type 2
http://www.elsevier.es/es-revista-medicina-clinica-2-articul...

OBJETIVO

Determinar el índice dedo brazo del paciente (IDB) para diagnosticar presencia de isquemia arterial oculta en aquellos casos que en el ITB se sospecha rigidez vascular (ITB>1.3). 
http://www.udetma.com/es/assistencia/tecniques/realizacion-i...

The Toe Brachial Index
 
Purpose: Assess presence or severity of peripheral arterial disease (PVD) of lower extremity.
Toe brachial index (TBI) and is a calculation based on the systolic blood pressures of the arm and the systolic blood pressures of the toes.  The examination  is performed with a photoplethysmograph (PPG) infrared light sensor and  a very small blood pressure cuff placed around the toe.
 
How is the exam given?
Patient will be asked to lie on the back while standard blood pressure cuffs are placed around the arm and big toe.  These cuffs will be inflated briefly above your normal systolic blood pressure.  Once the cuff is  deflated, blood pressure measurements are taken using the Doppler instrument (PPG). .  The arm and  big toe  systolic blood pressure measurements are recorded.  Then the big toe  systolic pressures are divided by the highest arm pressure to establish an TBI measurement for each leg. A TBI of .75 or greater is consider normal.
http://www.mpghealthcare.org/?q=node/224