What's the difference between bifurcation and trifurcation?

Bifurcation


Definition:

  • (n.) A forking, or division into two branches.

Example Sentences:

  • (1) Fibrinogen was scattered in the intercellular spaces, and located in the inner layer or edges of the thickened intima of the bifurcation with increasing plaque formation.
  • (2) In 60 patients, we examined 75 femoral bifurcations by duplex scanning and compared them with the independently performed angiography.
  • (3) Pathogenetically, the delta formation may represent an intermediate stage in the bifurcation process of a polydactylic ray.
  • (4) DNA oligodeoxynucleotides have been synthesized that enable these hypotheses to be tested; of particular interest is the combination of effects due to bifurcation (2) and methylation of the pyrimidines nucleotides (3).
  • (5) To elucidate the mechanism of migration of vascular smooth-muscle cells (SMCs) from media to intima, we have investigated the phenotypic modulation of the medial SMC at bifurcation of the celiac artery in 5 children and 3 young persons using a transmission electron microscope.
  • (6) The diagnostic accuracy of 5 MHz continuous-wave (C-W) Doppler with spectral analysis for detecting carotid bifurcation disease was evaluated.
  • (7) Although the most common pattern is for the right coronary artery to bifurcate at the crux giving the posterior descending (posterior interventricular) artery, a branch may arise before the crux, either as an aberrant acute marginal artery or as an early posterior descending artery, crossing the diaphragmatic surface of the right ventricle.
  • (8) The optimal geometry of the vascular bifurcation is interpreted on the basis of the principle of minimum work.
  • (9) Platelet accumulation was significantly higher at arterial branching points, 70% higher at intercostal artery bifurcations, and 150% higher at coronary artery bifurcations than in unbranched aortic intima.
  • (10) Therefore, we believe the indications for femorofemoral graft should be broadened to include all patients with unilateral aortoiliac occlusive disease where anatomic conditions are favorable and there is unilateral occlusion of an aortic bifurcation graft.
  • (11) Some part of bifurcations of arterioles showed a prominent localized vasoconstriction, and occasionally showed a complete luminal obstruction.
  • (12) Aortic bifurcation grafts should be used to construct the distal anastomoses beyond areas of significant disease.
  • (13) Some axons bifurcated into an ascending and a descending branch within the funiculi.4.
  • (14) Perforation of the bifurcation was well tolerated without later sequelae.
  • (15) A 65-year-old woman experienced transient paralysis of the left arm immediately after palpation of the right carotid artery; at surgery, a friable, atherosclerotic plaque was removed from the bifurcation of the artery.
  • (16) A case of a basilar bifurcation aneurysm associated with common carotid artery occlusion is reported.
  • (17) The carotid injection technique was modified by catheter implantation in the external carotid artery at the bifurcation of the common carotid artery.
  • (18) Right and left jugular vein segments were isolated by surgical technique for a 3 cm length, which included the bifurcation of the vessel, and left "in situ".
  • (19) The key element of the system is the bifurcation: depending on whether bifurcations are considered as a single entity or as a whole, either "local" or "global" geometry is employed.
  • (20) Carotid angiography, which was conducted in all cases, revealed a richly vascularized tumor in the region of the carotid artery bifurcation with characteristic "angulation" and "cuff" signs.

Trifurcation


Definition:

Example Sentences:

  • (1) The serial left carotid angiography, performed immediately after admission, showed the occlusion of left middle cerebral artery at the location of trifurcation.
  • (2) A review of the most recent literature shows that the prognosis for lesions of the proximal and middle segment of the popliteal artery is greatly improved while in lesions of the distal portion and particularly the trifurcation, the percentage of failure with consequent amputation is still very high (from 30% to 40% of cases).
  • (3) They consisted of (1) an unusual trifurcation of the abducent nerve, limited to the extradural portion of the neural trunk (1.4% of the cases) and (2) the duplicity (11.1%) of the neural trunk, starting before reaching the orbit and ending before reaching the m. rectus lateralis.
  • (4) The morphological examination of advanced atherosclerosis caused by atherogenic diet in the coronary arteries and in the aorta abdominalis (trifurcation) of pigs showed plaque hemorrhage and signs of vascularisation.
  • (5) The distal adjacent segment is demonstrated well in 81 to 95 per cent of the cases up to the level of the trifurcation.
  • (6) In a 54 year-old man, a symptomatic occlusion of the popliteal artery and its trifurcation occurred following radiotherapy.
  • (7) Confirmative cine-angiography revealed a few a-v-fistulae at the level of crural trifurcation, which might have exacerbated the symptoms of deep vein thrombosis.
  • (8) A perspex model of a dog aortic trifurcation was machined to scale and perfused with steady flow from a constant pressure reservoir.
  • (9) These anomalies include aberrations of the course of one or all of the segments of the canal; abnormal relation to the oval and round window; bifurcations and trifurcations of the nerve; and associations with dysplasia of the stapes, oval window, external ear canal, and auricle.
  • (10) The branching patterns of Dup-MCA could be classified as "direct bifurcation" from the internal carotid artery, since most lacked the essential bifurcation or trifurcation at the distal end of the M1 portion.
  • (11) This 11-year retrospective study reviewed 99 arterial injuries distal to the brachial bifurcation or popliteal trifurcation in 89 extremities in 88 patients.
  • (12) The most remarkable facts are the presence of a radiological pneumogallbladder, and the existence of a real trifurcation of the trachea on the bronchography, associated with a choledocal hypoplasia.
  • (13) It is an extreme variation in tooth form seen in multirooted teeth in which the bifurcation or trifurcation of the roots is displaced toward the apex of the root, resulting in increased size of the pulp chamber.
  • (14) In 7 of the 100 cases, a trifurcation was found at the main division of the MCA, in 3 cases a secondary trunk trifurcated.
  • (15) The MCA lateral projection (patient's head inclined away from the side of injection) is valuable in investigating aneurysms of the internal carotid artery, posterior communicating artery and middle cerebral artery trifurcation.
  • (16) These events have been related to the extent of arteriosclerotic lesions in the trifurcation of the popliteal artery (trifurcational disease, TFD) in 368 patients treated consecutively.
  • (17) In the others, branching of the right posterior branch was trifurcated or independent.
  • (18) Measurements were performed using a 20 MHz pulsed Doppler transducer and an electromagnetic flow meter mounted on the common umbilical artery and catheters at the aortic trifurcation and in one of the umbilical veins.
  • (19) Each reconstruction was classified in one of eight categories depending on the site of the distal anastomosis: above- and below-knee popliteal, anterior and posterior tibial, peroneal, trifurcation, sequential, and crural (tibial or peroneal) bypasses with adjunctive distal arteriovenous fistulas.
  • (20) 42 vascular reconstructive procedures, concerning occlusions in full length of the trifurcation of the lower limb, were carried out in 40 patients.